How To Fix TU190 - Cannot change schedule record &1 &2 - billing order already exists

TU190 - Overview

• Message type: E = Error

• Message class: TU - Billing/Scheduling/Budget Billing

• Message number: 190

• Message text: Cannot change schedule record &1 &2 - billing order already exists

What causes this issue?

You cannot change this schedule record of portion &V1& for scheduled
billing date &V2& because a billing order for installation &V3& already
exists for this scheduled billing date.
The scheduled billing date is the key field of the billing order. This
ensures that no billing period is used twice for meter reading and
billing.

System Response

You can only view the schedule record in display mode.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

TU190 - Details

• The SAP error message TU190, which states "Cannot change schedule record &1 &2 - billing order already exists," typically occurs in the context of scheduling agreements or delivery schedules in SAP. This error indicates that you are trying to modify a schedule line that is already linked to a billing document, which prevents any changes to that schedule line.
  
  Cause:
  
  Existing Billing Document: The primary cause of this error is that there is already a billing document created for the schedule line you are trying to change. Once a billing document is generated, the associated schedule line becomes locked for modifications.
  Data Integrity: SAP enforces data integrity rules to ensure that changes do not disrupt the billing process or lead to inconsistencies in the data.
  
  
  Solution:
  To resolve this error, you can consider the following approaches:
  
  
  Check Billing Document: 
  
  Identify the billing document associated with the schedule line. You can do this by checking the billing